------------[ cut here ]------------
kernel BUG at fs/ext4/extents.c:3180!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 697 Comm: syz.5.68 Not tainted 5.10.237-syzkaller-1007474-gcf6ed0f1511d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_split_extent_at+0xe6e/0xe90 fs/ext4/extents.c:3180
Code: 48 89 df 48 89 74 24 68 e8 cf 8b d3 ff 48 8b 74 24 68 e9 5a fb ff ff e8 40 9c 99 ff 0f 0b e8 39 9c 99 ff 0f 0b e8 32 9c 99 ff <0f> 0b e8 2b 9c 99 ff 0f 0b e8 24 9c 99 ff 0f 0b e8 1d 9c 99 ff 0f
RSP: 0018:ffffc900018e64e0 EFLAGS: 00010293
RAX: ffffffff81c9f63e RBX: 000000000000000b RCX: ffff88811a55e2c0
RDX: 0000000000000000 RSI: 000000000000003d RDI: 0000000000000020
RBP: ffffc900018e6650 R08: 0000000000000010 R09: 000000000000003b
R10: ffffed102135d4aa R11: 1ffff1102135d4a8 R12: 0000000000000010
R13: 0000000000000032 R14: 1ffff1102629d002 R15: 000000000000003d
FS:  00007f52efa646c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9276c20000 CR3: 0000000123870000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_split_extent+0x386/0x4e0 fs/ext4/extents.c:3379
 ext4_split_convert_extents fs/ext4/extents.c:3708 [inline]
 ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3869 [inline]
 ext4_ext_map_blocks+0x1b38/0x5d40 fs/ext4/extents.c:4224
 ext4_map_blocks+0x978/0x1bc0 fs/ext4/inode.c:674
 _ext4_get_block+0x1bb/0x4b0 fs/ext4/inode.c:817
 ext4_get_block_unwritten+0x2a/0x40 fs/ext4/inode.c:848
 ext4_block_write_begin+0x567/0x1330 fs/ext4/inode.c:1101
 ext4_write_begin+0x651/0x1550 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x455/0xe80 fs/ext4/inode.c:3033
 generic_perform_write+0x2be/0x510 mm/filemap.c:3509
 ext4_buffered_write_iter+0x4b8/0x640 fs/ext4/file.c:271
 ext4_file_write_iter+0x536/0x1980 fs/ext4/file.c:-1
 do_iter_readv_writev+0x491/0x600 fs/read_write.c:-1
 do_iter_write+0x189/0x630 fs/read_write.c:866
 vfs_iter_write+0x7d/0xa0 fs/read_write.c:907
 iter_file_splice_write+0x650/0xc30 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe9/0x120 fs/splice.c:936
 splice_direct_to_actor+0x4c0/0xb10 fs/splice.c:891
 do_splice_direct+0x1b3/0x2c0 fs/splice.c:979
 do_sendfile+0x8ca/0xf90 fs/read_write.c:1257
 __do_sys_sendfile64 fs/read_write.c:1318 [inline]
 __se_sys_sendfile64 fs/read_write.c:1304 [inline]
 __x64_sys_sendfile64+0x18f/0x1f0 fs/read_write.c:1304
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f52efff2169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f52efa64038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f52f020afa0 RCX: 00007f52efff2169
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000005
RBP: 00007f52f00732a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000100001 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f52f020afa0 R15: 00007ffd6dbf0368
Modules linked in:
---[ end trace a054c9c7db395b6b ]---
RIP: 0010:ext4_split_extent_at+0xe6e/0xe90 fs/ext4/extents.c:3180
Code: 48 89 df 48 89 74 24 68 e8 cf 8b d3 ff 48 8b 74 24 68 e9 5a fb ff ff e8 40 9c 99 ff 0f 0b e8 39 9c 99 ff 0f 0b e8 32 9c 99 ff <0f> 0b e8 2b 9c 99 ff 0f 0b e8 24 9c 99 ff 0f 0b e8 1d 9c 99 ff 0f
RSP: 0018:ffffc900018e64e0 EFLAGS: 00010293
RAX: ffffffff81c9f63e RBX: 000000000000000b RCX: ffff88811a55e2c0
RDX: 0000000000000000 RSI: 000000000000003d RDI: 0000000000000020
RBP: ffffc900018e6650 R08: 0000000000000010 R09: 000000000000003b
R10: ffffed102135d4aa R11: 1ffff1102135d4a8 R12: 0000000000000010
R13: 0000000000000032 R14: 1ffff1102629d002 R15: 000000000000003d
FS:  00007f52efa646c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9276c27000 CR3: 0000000123870000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400